A full-scale static test to failure was conducted on 6-m (236.22 in.)-long steel pipes constituting a segment of a telescopic wind tower with a 60-kW wind turbine. The diameter of the circular cross section of the steel pipes was 900 mm (35.43 in.), and the nominal thickness was 10 mm (0.39 in.). The steel grade was 355 MPa (51,488 psi). The tests were conducted in a force-controlled mode in a four-point bending test with a shear-to-span ratio of 2.05. The flexural limit states developed in the form of ovalization of the cross section and of local buckling. The buckling occurred in the plastic range because of the diameter-to-thickness ratio of the section. Although local buckling caused slight strength degradation, the reduction due to the shear-to-moment interaction and ovalization of the cross section was very significant (58%), while the recorded response revealed a good amount of postbuckling ductility (2.42). A finite-element analysis with ABAQUS code was also conducted for comparison with the experimental results and for validation of the simplified proposed model. By properly modeling the imperfection effects due to the roundness of the steel tube, good correlation of the structural response and failure mode, and with the analytical model, were also achieved.

Campione G., Monaco A., Cannella F. (2019). Flexural Test on a Full-Scale 60-kW Wind Turbine-Tower Telescopic Steel Pipe. PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION, 24(3), 04019012 [10.1061/(ASCE)SC.1943-5576.0000433].

Flexural Test on a Full-Scale 60-kW Wind Turbine-Tower Telescopic Steel Pipe

Campione G.
Membro del Collaboration Group
;
Monaco A.
Membro del Collaboration Group
;
Cannella F.
Membro del Collaboration Group
2019-01-01

Abstract

A full-scale static test to failure was conducted on 6-m (236.22 in.)-long steel pipes constituting a segment of a telescopic wind tower with a 60-kW wind turbine. The diameter of the circular cross section of the steel pipes was 900 mm (35.43 in.), and the nominal thickness was 10 mm (0.39 in.). The steel grade was 355 MPa (51,488 psi). The tests were conducted in a force-controlled mode in a four-point bending test with a shear-to-span ratio of 2.05. The flexural limit states developed in the form of ovalization of the cross section and of local buckling. The buckling occurred in the plastic range because of the diameter-to-thickness ratio of the section. Although local buckling caused slight strength degradation, the reduction due to the shear-to-moment interaction and ovalization of the cross section was very significant (58%), while the recorded response revealed a good amount of postbuckling ductility (2.42). A finite-element analysis with ABAQUS code was also conducted for comparison with the experimental results and for validation of the simplified proposed model. By properly modeling the imperfection effects due to the roundness of the steel tube, good correlation of the structural response and failure mode, and with the analytical model, were also achieved.
Settore ICAR/09 - Tecnica Delle Costruzioni
https://ascelibrary.org/journal/ppscfx
Campione G., Monaco A., Cannella F. (2019). Flexural Test on a Full-Scale 60-kW Wind Turbine-Tower Telescopic Steel Pipe. PRACTICE PERIODICAL ON STRUCTURAL DESIGN AND CONSTRUCTION, 24(3), 04019012 [10.1061/(ASCE)SC.1943-5576.0000433].
File in questo prodotto:
File Dimensione Formato  
campione 3.pdf

Solo gestori archvio

Tipologia: Versione Editoriale
Dimensione 3.09 MB
Formato Adobe PDF
3.09 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/389156
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 0
social impact